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st: Reshape vs. merge: computing time?
From
Dorothy Bridges <[email protected]>
To
[email protected]
Subject
st: Reshape vs. merge: computing time?
Date
Sat, 18 Jan 2014 12:29:23 -0800
Dear all: I have a data set in which 20 million individuals appear in
each of ten periods (~200 million observations total). The data are
long and I would like them to be wide. From a computing time / memory
usage perspective, am I better off (a) running reshape or (b) saving
each of the ten periods as a separate file and then merging on person
ID?
Thank you,
D
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